Browsing 2017 International Solid Freeform Fabrication Symposium by Department "Mechanical Engineering"
Now showing items 21-40 of 221
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Blown Powder Laser Cladding with Novel Processing Parameters for Isotropic Material Properties
(University of Texas at Austin, 2017)A limitation for blown powder laser additive manufacturing in many applications is the material properties of parts made tend to show anisotropy due to directional solidification of the microstructure. Recent work reported ... -
Building Zr-Based Metallic Glass Part on Ti-6Al-4V Substrate by Laser-Foil-Printing Additive Manufacturing
(University of Texas at Austin, 2017)Through using Zr intermediate layers, Zr52.5Ti5Al10Ni14.6Cu17.9 metallic glass (MG) parts are successfully built on Ti-6Al-4V substrate by laser-foil-printing (LFP) additive manufacturing technology in which MG foils are ... -
Casting - Forging - Milling Composite Additive Manufacturing Thechnology
(University of Texas at Austin, 2017)The current metal additive manufacturing has some drawbacks, such as poor performance in producing forgings, low accuracy and efficiency, and high cost. This paper proposes a new technology called casting-forging-milling ... -
Ceramic Additive Manufacturing: A Review of Current Status and Challenges
(University of Texas at Austin, 2017)In recent years, various additive manufacturing (AM) technologies that are capable of processing ceramic materials have been demonstrated. On one hand, many of the AM ceramic technologies have demonstrated geometry freedom ... -
Challenges in Making Complex Metal Large-Scale Parts for Additive Manufacturing: A Case Study Based on the Additive Manufacturing Excavator
(University of Texas at Austin, 2017)The Additive Manufacturing Excavator (AME) contained several key components that were 3D printed at The Manufacturing Demonstration Facility (MDF) of Oak Ridge National Laboratory (ORNL); it was presented at and performed ... -
Changing Print Resolution on BAAM via Selectable Nozzles
(University of Texas at Austin, 2017)Big Area Additive Manufacturing (BAAM) is an additive manufacturing (AM) technique that rapidly deposits polymer to fabricate large components. However, the increase in deposition rates leads to a decrease in resolution ... -
Characterization of Heat-Affected Powder Generated During the Selective Laser Melting of 304L Stainless Steel Powder
(University of Texas at Austin, 2017)The selective laser melting (SLM) process is an Additive Manufacturing (AM) technique that uses a laser to fuse successive layers of powder into near fully dense components. Due to the large energy input from the laser ... -
Characterization of MAR-M247 Deposits Fabricated Through Scanning Laser Epitaxy (SLE)
(University of Texas at Austin, 2017)This paper aims to characterize the microhardness and the process-induced residual stress in nickel-base superalloy MAR-M247 fabricated using a laser-powder bed fusion (LPBF)-based additive manufacturing (AM) process, ... -
Comparative Costs of Additive Manufacturing vs. Machining: The Case Study of the Production of Forming Dies for Tube Bending
(University of Texas at Austin, 2017)Additive manufacturing processes for metallic components become economically viable when they substitute conventional processes that make use of moulds and dies to produce casting or semi-finished parts with high added ... -
Competing Influence of Porosity and Microstructure on the Fatigue Property of Laser Powder Bed Fusion Stainless Steel 316L
(University of Texas at Austin, 2017)Crack initiation constitutes a large portion of the total life for parts under high cycle fatigue loading. Materials made by the laser powder bed fusion (L-PBF) process contain unavoidable process-induced porosity whose ... -
Computed Axial Lithography for Rapid Volumetric 3D Additive Manufacturing
(University of Texas at Austin, 2017)The vast majority of additive manufacturing processes today operate by printing voxels serially point-by-point to build up a 3D part. In some higher throughput techniques, for example optical printing methods such as ... -
Computer Integration for Geometry Generation for Product Optimization with Additive Manufacturing
(University of Texas at Austin, 2017)Designing parts for additive manufacturing (AM) offers a broad range of geometrical and functional potentials. On the one hand the manufacturing technology offers the possibility of manufacturing highly complex freeform ... -
Considering Machine- and Process-Specific Influences to Create Custom-Built Specimens for the Fused Deposition Modeling Process
(University of Texas at Austin, 2017)Compared to conventional polymer processing technologies the material selection in the Fused Deposition Modelling (FDM) process is restricted. To expand the range of materials the requirements for the material properties ... -
Construction of Metallic Glass Structures by Laser-Foil-Printing Technology
(University of Texas at Austin, 2017)Metallic glasses (MGs) have superior mechanical properties such as high tensile strength, hardness, and corrosion resistance, as compared to crystalline metals. Although newly developed MGs have significantly reduced ... -
Continuous Laser Scan Strategy for Faster Build Speeds in Laser Powder Bed Fusion System
(University of Texas at Austin, 2017)Research has shown significant influence of laser scan strategy on various part qualities in the laser powder bed fusion additive manufacturing process. The National Institute of Standards and Technology developed the ... -
Controlling Thermal Expansion with Lattice Structures Using Laser Powder Bed Fusion
(University of Texas at Austin, 2017)Tuning the Co-efficient of Thermal Expansion (CTE) of a component is traditionally limited by material choice. Laser Powder Bed Fusion (LPBF) enables the designer to create complex geometries including lattice structures. ... -
Defects Classification of Laser Metal Deposition Using Acoustic Emission Sensor
(University of Texas at Austin, 2017)Laser metal deposition (LMD) is an advanced additive manufacturing (AM) process used to build or repair metal parts layer by layer for a range of different applications. Any presence of deposition defects in the part ... -
Design and Additive Manufacturing of a Composite Crossflow Heat Exchanger
(University of Texas at Austin, 2017)Additive manufacturing (AM) with composite materials reveals new possibilities for direct manufacturing of end-use products, breaking the paradigm of 3D printing as only a prototyping or pre-production technique that has ... -
Design and Development of a Multi-Tool Additive Manufacturing System
(University of Texas at Austin, 2017)Additive manufacturing (AM) makes complex parts with a single class of material. Each AM technology encompasses specific techniques and requires diverse components to selectively form each layer, which has segregated AM ... -
Design and Fabrication of Functionally Graded Material from Ti to γ-TiAl by Laser Metal Deposition
(University of Texas at Austin, 2017)Functionally graded material (FGM) is one kind of advanced material characterized by a gradual change in properties as the position varies. The spatial variation of compositional and microstructure over volume is aimed ...
